0bin is a classic pastebin featuring client-side encryption provided by JavaScript. All pastes are encrypted before being sent to the server, and decrypted by the browser when reading them. The purpose is not so much to protect users' privacy as to prevent the service host from being forced to moderate the content by legal means.

Ample SDK is a standards-based cross-browser JavaScript UI framework for building Rich Internet Applications running in a Web browser. It employs XML technologies (such as XUL, SVG, and HTML5) for UI layout, CSS for UI style, and JavaScript with DOM or jQuery APIs for application logic client-side. Ample SDK equalizes browsers and brings technology support to those missing any. The componentization model built into the core of the framework allows prototyping existing UI elements and creating new ones.

In Artifact of Mazes, your ship is lost in a three-dimensional maze. The only way out is to collect pieces of a strange artifact and fit them together. This HTML5 game includes custom practice modes, randomly generated mazes and puzzles, a zoomable overview map, and help screens as well as mouse, keyboard, and touchscreen support.

AsterClick is a system for developing with Asterisk AMI and HTML5 WebSockets. It is composed of two parts: a server-side middleware and a client-side JavaScript class. The server-side middleware mediates between Asterisk AMI and multiple HTML5 browsers connected via WebSockets. The JavaScript class manages the WebSockets connection and provides methods like addEventListener() and removeEventListener() that take AMI events as parameters. AsterClick does away with browsers polling servers by exploiting the persistent nature of HTML5 WebSocket connections. The communications protocol between client and server is based on XML. Commands can be sent via the JavaScript class using XML strings, XML objects, or JSON objects. A client can connect to multiple Asterisk servers at the same time. The server-side component of AsterClick has hooks for both custom AsterClick commands and server side plugins and related events that all share the same XML stream.

CIP Reporting is a customizable Web-based incident reporting, risk management, and workplace safety software system. Its open API supports open source extensions and add-ons. Currently available is 1080p-geo-person-shuffle, a stand-alone HTML5 Web application which can query the API of a CIP Reporting server for person views to display on a full-screen 1080p display.

Cacophony is a tool for creating and viewing interactive videos, especially music videos, using HTML5 video and canvas elements and Javascript. Interactive elements include visuals/story adapting in response to user input as text, mouse movement, drawings, and choices (choose-your-own-adventure). Input from the viewer can affect the subsequent video, and also be sent to a server for integration with other Web applications (social networking, sharing, and geotagging), which is possible because effects are rendered on-the-fly in the browser, not pre-rendered like traditional video. Input can also come from external sources (RSS and JSON), so you can integrate external data, or previously generated data, back into subsequent views of the video.

CubicWeb is a semantic Web application framework that empowers developers to build Web applications by reusing components (called cubes) and following the well known object-oriented design principles. Its main features are: an engine driven by the explicit data model of the application; a query language, RQL, similar to W3C’s SPARQL; a selection+view mechanism for semi-automatic XHTML/XML/JSON/text generation; a library of reusable components (data model and views) that fulfill common needs; the power and flexibility of the Python programming language; and the reliability of SQL databases, LDAP directories, Subversion, and Mercurial for storage backends.